Edging-die.



C. SONNEBORN.

EDGING DIE.

Y APPLICATION FILED APR. I. 1914. L. 1 Patented Aug. 31,1915.

3 SHEETS-SHEET I.

/ v FEQ INVENTOR WITNESSES coLuMBlA PLANouRAl-'H c0..wAstuNaToN. D. C.

C. SONNEBORN.

EDGING DIE.

APPLICATION FILED APR.1.1914.

1,1 5 l 624. Patented Aug. 31, 1915.

3 SHEETS-SHEET 2.

0^/ 5f 50 if fa mung?? WITNESSES C. SONNEBORN.

EDGING DIE.

APPLlcATloN FILED AP11.1.1914.

1,151,62@ Patented Aug. 31,1915.

3 SHEETS-SHEET 3.

:t annul mi 4/ INVENTOR TTTTTTD STATES PATEN T OFFTQE.

CHARLES SONNEBORN, OF WEST PITTSBURG, PENNSYLVANIA, ASSIGNOR TO PRESSED METAL RADIATOR COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

EDGING-IDIE.

Application filed April 1, 1914.

To all irl/,om t may mime/1n Be it known that I, CHARLES SONNEBORN, a resident of Nest Pittsburg, in the county of Lawrence and State of Pennsylvania, have invented a new and useful Improvement in Edging-Dies, of which the following is a specication.

This invention relates to dies for shaping sheet metal articles.

The object of the invention is to provide dies for this purpose by means of which a partially shaped sheet metal article can be shaped around its edges, that is, can have its entire edge bent up to form a flange oi to otherwise shape tlie Same, and which also will shape or flange the edges of openings through the blank, which dies aie adjustable to adapt them for shaping similar articles of different sizes, and are also formed in sections, so that each part can be readily replaced or renewed when worn.

In the accompanying drawings Figure is a face view of the bottom die; Fig. 2 is a similar view of the top die; Fig. 3 is a longitudinal section through the bottom die on the line 3-3 Fig. 1; Fig. 4 is a longitudinal section through the top die on the line 4 4 Fig. 2; Fig. 5 is a cross-sectional view through both dies in assembled relation on the line 5-5 Figs. 2 and 3, and showing the lower die in position before the edging operation; and Fig. 6 is a similar view, showing the die parts at the conclusion of the edging operation.

The dies illustrated are adapted to be actuated by any suitable press, the bottom die being suitably secured to the frame or bed of the press and the top die being car ried by the vertically movable platen oi press head. The means for securing these dies to the press bed and platen may be varied within wide limits. Both the top and bottom dies are of sectional or built up construction for the purpose of adjustability, accuracy of construction and the replacing of worn pieces. The dies have been illustrated for shaping the peripheral edges and the edges of openings through partially formed sections for sheet metal radiators, and for providing said edges with a ange or rim, and will be described in connection with such use, although it is ob Specification of Letters Patent.

Patented aug. ai, isis.

Serial No. 828,858.

vious that the main features of construction may be adapted for shaping the edges of various articles.

As illustrated the bottom die 1 comprises a pair of end sections or pieces 2 and one or more intermediate sections or pieces 3, depending upon the length of the article being shaped. By moving the end sections farther apart and interposing between the saine a larger number of intermediate sections or an intermediate section of greater length the die can be increased in length within the limits of any desired extent.

Each end section 2 comprises the main body or web portion 4, which is a comparatively thin plate, and the outer portion of which is thickened to form a wall portion 5 having a seat 6 for receiving a shaping die member 7, which is secured to the end section 2 by tap bolts 8 extending through elongated apertures 9 in the wall 5. The inner working face l0 of the die member 7 eX- tends crosswise of the end section 2 and at its ends is curved and terminates in straight portions substantially longitudinal of the die, and which serve to shape the edge of the curved end portion of the radiator section. The die member 7 may be a single piece but is shown as five parts, an end portion, two corner portions and two side portions, each of which may be separately replaced when worn. The thickened outer portion of the end section 2, together with the thinned web 4, form a socket or seat for an inside piece 11, the outer surface of which is provided with a rabbet or seat 13 to receive a shaping die member 14, which has a transverse intermediate portion, curved corner portions, and two side portions, which portions are secured to the inside piece by tap bolts 15 extending through openings in the die member 14, and into the side piece 1l. The working surface of the die member 14 forms a continuation of the shaping surface l0 of die meinber 7. The upper face of the inside piece 11 is also provided with longitudinally eX tending alternate depressions 16 and projections 17 which are curved to fit the already partially formed surface of the radiator section, or may act as forming or shaping die portions in operating upon a Hat sheet, and

which coperate ivith similar curved portions of thc upper die member hereinafter described, to securely hold the radiator section and avoid ivrinkling or stretching thereof While its edge is being shaped.

rlhe intermediate sections 3 consist of a comparatively thin portion or web 18 Which at each end is provided with upwardly eX- tending portions 19 having transverse elongated slots 20 and having their inner faces forming seats 21 for the die members 22, Which are secured to the intermediate sections by tap bolts 23 extending through the slots 2O and entering holes in the die members. The end portions of the intermediate sections are provided With perforated ears 2st for securing them to the base or bolster plate hereinafter described, While the outer faces of the projections 19 are left open and accessible so that the shaping die portions 22 can be readily removed for replacement or repair. Each of the intermediate sections 3 of the bottom die is provided with an inside piece or member 25 'Whose end is rabbeted to form a seat 26 for the die member 27, which is secured to said inside piece by tap bolts 28 extending through holes in the die Vmembers into the inside piece. The upper faces of the insidepieces 25 are also provided With alternate depressions and projections 1G'LL and '17a which match those on thel end pieces 2.

The inside piece 11 of the end section 2 is provided on the central longitudinal line of ceive the male Hanging. die member hereinafter described.`

The die sections 2 andl 3 are secured to a suitable base: plate or bolster member 36,'

which plate is provided With threaded holes for receiving tap bolts 37 extending through holes 38 in the peripheral portions of the end and intermediate sections 2 and 3.

and interlocking With aA guide strip or strips 41, which also enter corresponding grooves or seats 42 in thebottom .faces of the intermediate sections 2 and 3, said guidev strip.1

being secured to the-several die sections by suitable tap bolts 43. The end sections 2, at each side of the die Vare also provided with' slotted .ears .l or .lugs 4c5for,receiving .longi- The` base or bolster plate is also provided lwith a. longitudinal seat or groove l0 for receiving.

tudinally extending tie rods or bolts 46 for securely clamping together all of the several sections of the die.

The inside pieces 11 and 25 of the bottom die are movable therein and act in conjunction With the upper die member to either shape or partially form the radiator section as the dies come together or to securely hold said section during the edging operation. lin the arrangement shown the several inside. pieces rest on pins 76 slidable in holes i7 in the frame 7S and bolster plate and which pins rest on the upper ends of rods 79, which in turn are supported by a common pressure plate 80. Plate 80 is supported by a series of yielding or spring nenibers, such as the rubber blocks 81 carried by washers or seats 82 held bynuts S3 and filling tubes 84 on rods 85 threaded into the frame. By turning the nuts 83 the upivard pressure against the inside piece 75 may be increased or diminished, and its position may be adjusted by inserting loose pins 76 or illing tubes Se of the necessary length, as Will be readily understood. The inside pieces normally project outwardly from the face of the die, as shoivn in Fig. 5, and sink to their seats as the dies come together, as shown in Fig. G, and thus act as holding or forming members as before described. i'is the dies open the inside pieces move outwardly and strip the radiator section from the dies.

The top die el? comprises tivo end sections 48 and one or more intermediate sections 49,

which, as in the case of the bottom die, are' divided on straight transverse lines so thatl any number of intermediate sections of any length Within limits can be assembledbetween the tivo end sections to build up a diev of the proper length.

Each end section -lS comprises a comparatively thick central portion 50 surrounded` by a thinner iiieii'ipheral portion 51, the outer. surface or Wall of the thickened vportion 50 forming a seat for receiving a die shaping y member 52, preferably formedl of severa-l.A

parts like the die 14, and Which has an intermediate transverse portion extending.v

crossivise of the die and curved at its ends and terminatingin straight portions eXtendi ing longitudinally ofthe die. Said die member is secured to its seat by tap bolts 52 threaded into the end section through' elongated slots 5l of the die.- The outer face of the die member 52 cooperates ivithl the Working face 10 of the female die 7 and the die 1l.

with longitudinal curved projections 54k shape the central portion of the radiator l The front face of the thickened portion 50 of the end section 48 is provided n 125 alternating with depressions 55 andiivhich. cooperate ivith the alternate depressions 4andV projections 16 and 17 ofthe die section 2 vto tor section during the flanging operation. Each end section 48 is also provided with two ejectorl pins 72 projecting from the bottoms of the grooves 55 and having a large head 78 seated in a countersunk recess, said pins being forced outwardly by suitable springs 7 4f.

The end, section 48 is provided on the central longitudinal line of the die with a through opening 56 for receiving the shank of a male flanging die 57, which' is rigidly held in proper relation to the female flanging die by a tap bolt 58 threaded through the wall of the laterally extending opening in the end section 48, and accessible at the outer end of the said opening for adjusting the male fianging member. The male flanging member has a head 59 provided with shaping portions 59a, and is arranged to enter the opening 35 in the female flanging die member and turn over a rim or flange around the edge of the previously formed opening of the boss or projection on the radiator section.

Surrounding and sliding on the shank of the male fianging die member 57 is a stripping ring 60 having its face shaped to form or to correspond with the configuration of the boss or projection on the radiator section and which coperates with the shaping face 34 of the female flanging die 31 and which stripping ring is normally pressed outwardly by suitable springs 6l.

The intermediate sections 49 of the upper die member are provided with thickened central portions 65 having their outer ends rabbeted on their inner edges to form seats for die members 66 which are held to said seats by tap bolts 67 extending through openings in the die members into the thickened portions of the intermediate sections. rlhe front faces of the intermediate sections are also provided with curved projections 69 and depressed portions 69 which are shaped to correspond with or match the faces of the inside pieces of the corresponding intermediate sections of the bottom die member. Said intermediate sections are also provided with end ears or lugs 49a.

The upper die sections are secured to a suitable base or bolster plate 70 bv means of bolts 7l extending through holes in the peripheral web portions 5l of the end sections and in the ears or lugs 49a of the intermediate sections and entering tap holes in the bolster plate and are held in proper alinement and relative position by means of an interlocking guide strip fitting in alining grooves formed respectively in the back faces of the die sections and in the front face of the base or bolster plate, and secured to the die sections by means of tap screws 76.

Then fiat sheets are fed to the dies the central die portions shape and emboss the central portions of the radiator sections, While the peripheral die portions turn or form an edge fiange, but the dies can also be used for merely fianging the edges of a partially formed section, in which case the inside or central die parts merely act as holding members to prevent the sheet from wrinkling or stretching during the flanging operation.

The dies described are of sectional construction so that they can be readily adjusted to shape or flange sections of various lengths, by merely taking out certain ones of the intermediate sections and replacing them by others of different lengths, or a different number of intermediate sections. The wearing portions may also be readily replaced or renewed as often as desired without dismantling the entire die and can be replaced by other die shaping members designed to give a different configuration or a dierent shape of flange to the section. The manner of building up the dies also enables them to be very accurately constructed so as to produce absolutely uniform shaped and flanged sections.

lt is also obvious that the construction of dies described can be adapted to shape and fiange articles of different forms and kinds.

What l claim is l. A die comprising end sections and oney or more changeable intermediate sections having working surfaces matching those of the end sections, said sections being each provided with flanging die members, a base plate, and an interlocking guide member extending longitudinally of the die and engaging registering grooves in the base plate and in the back faces of the end and intermediate sections.

2. A die comprising end sections and one or more changeable intermediate sections, said sections being provided with curved inner working faces arranged to hold the sheet being operated upon, said sections also being each provided with flanging die members arranged to form a continuous flanging die member peripherally of said die, and a base plate to which all of said sections are secured.

3. A die comprising end sections and one or more changeable intermediate sections, said end sections being provided with inner seats, inside members lying in said seats and having shaped surfaces arranged to act upon the central portion of the sheet, and fianging die members on said end and intermediate die sections arranged to form a flange on the edge of the sheet.

4. A'de comprising end sections and one or more changeable intermediate sections, each of said sections being provided with a central web portion and wall portions forming a seat, inner members in said seats having: curved faces arranged to engage the central .portion of the sheet, and fianging die members secured to said sections and matching each other and arranged to form a flange on the edge ofthe sheet.

5. A diecomprising end sections and one:

or more changeable intermediate sections,

each of said sections beingV provided `with acentral Web portion and Wall portions form-y ing aseat, inner members in said seats having curved faces arranged to engage the central portion of the sheet, and flanging die members secured to said sections and matching' each other and arranged to form a flange on the edge of the sheet, a base plate, and

an interlocking guide member engaging registering vgrooves in the base plate and die sections.

6.y A die comprising end sections, and one or more changeable intermediate sections,

said sections being provided With a central. Web portion and Wall portions forming ar Copies of this patent may be obtained for ve cents each-.by-faddressing-thef Commssonerof Il-atenfts,`

central YWeb,l portion and -vvall portions forming a seat, innermembers in said seats having curved faces arranged to engage the'centralfportion of the sheet, andflangingfdie members secured vto said sectionsl and matching eachother and arranged lto form aflange` on the edge of the sheet, and die members` carried by said endk sections for Hanging ,the

edgesofholeswthrough the sheetbeing op on the'edge of the sheet, male die members carriedby saidvdie sections andarranged to flange the edges of.holes through the sheet, and =a yielding `,stripper ring slidable on the shank of said male die member.

In testimony whereof, Ivhave hereunto set my hand.

CHARLES i SONNEBORN; /Vitnesses ELBERT L. HYDE, WILLIAM 1 B. v WHARTON.

Washington, D. C. 

